The Blue Mosque in Turkey

The famous blue mosque commonly known as the Sultan Ahmed Mosque After the 14th Sultan Ahmed, who commissioned its construction. It took nearly seven years to build the mosque. The famous mosque was constructed in the locality of the mansion of the Byzantine monarchs which had to be demolished. The spoils of the war were supposed to fund the construction and since Ahmed had no victories he had to fund it from existing funds. The design of the mosque consolidates both Ottoman and Byzantine architecture.

Reference:
https://knowaboutturkey.wordpress.com/2015/01/26/the-blue-mosque-in-turkey/